The City of South Portland is one of the largest petroleum storage depots on the East Coast.  Portland Harbor is always a top shipper of petroleum,having seven facilities within the City of South Portland.  The department maintains two Class B foam pumpers, one with 500 gallons of AFFF and the other with 500 gallons of AR-AFFF.  Additionally, the department has a stock pile of AFFF Class B foam, with 990 gallons on a trailer.  Each facility within in the city has its own supply of both AFFF foam and AR-AFFF foam (depending on product on site).

As part of the all hazards plan, each facility has been preplanned and the amount of foam needed has been calculated in the event of a fire. There is enough Class B foam in the city to extinguish the largest tank if the worst were to happen.